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Code Issues Releases Activity

SERVER-43913 Multiversion tests for compound hashed indexes

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This commit is contained in:
Bernard Gorman 2019-12-02 10:33:11 +00:00 committed by evergreen
parent a8b246e6ac
commit 9f59f0c4ed
1 changed files with 16 additions and 6 deletions
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22
jstests/multiVersion/compound_hashed_index.js
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@ -2,18 +2,17 @@
* Tests the behaviour of compound hashed indexes with different FCV versions.
*
* Compound hashed index creation is enabled in 4.4. In this multi version test, we ensure that
* - We cannot create compound hashed index when binary is 4.4 and FCV is 4.2 or when binary
* is 4.2.
* - We cannot create compound hashed index on binary 4.4 in FCV 4.2 or when binary is 4.2.
* - We can create compound hashed indexes when FCV is 4.4.
* - Compound hashed indexes built on FCV 4.4 continue to work when we downgrade to FCV 4.2.
* - We can start the server with FCV 4.2 with existing compound hashed indexes.
* - We cannot start the server with 4.2 binary with existing compound hashed indexes.
* - A compound hashed index can be dropped while in FCV 4.2.
* - TODO SERVER-43913: Verify that a compound hashed index built in FCV 4.4 continues to work when
* we downgrade to FCV 4.2.
*/
(function() {
"use strict";
load("jstests/libs/analyze_plan.js"); // For assertStagesForExplainOfCommand.
load("jstests/multiVersion/libs/multi_rs.js"); // For upgradeSet.
load("jstests/replsets/rslib.js"); // For startSetIfSupportsReadMajority.
@ -83,12 +82,23 @@ jsTestLog("Can create a compound hashed index on binary 4.4 with FCV 4.4.");
assert.commandWorked(testDB.adminCommand({setFeatureCompatibilityVersion: latestFCV}));
assert.commandWorked(coll.createIndex({c: 1, a: "hashed", b: 1}));
assert.commandWorked(coll.createIndex({b: "hashed", c: 1}));
assert.commandWorked(coll.insert([{a: 1, b: 1, c: 1}, {a: 2, b: 2}]));
assert.commandWorked(coll.insert([{_id: 0, a: 1, b: 1, c: 1}, {_id: 1, a: 2, b: 2}]));
rst.awaitReplication();
jsTestLog("Can use an existing compound hashed index after downgrading FCV to 4.2.");
// TODO SERVER-43913: Verify that the queries can use the indexes created above.
assert.commandWorked(testDB.adminCommand({setFeatureCompatibilityVersion: lastStableFCV}));
// Insert one doc to be updated, one doc to be deleted, and one doc to remain as-is until queried.
assert.commandWorked(
coll.insert([{_id: 2, b: 10, c: 2}, {_id: 3, a: 1, b: 3, c: 1}, {_id: 4, a: 1, b: 4, c: 1}]));
assert.commandWorked(coll.update({c: 2}, {$set: {b: 2}}));
assert.commandWorked(coll.remove({b: 3}));
assertStagesForExplainOfCommand(
{coll: coll, cmdObj: {find: coll.getName(), filter: {b: 2}}, expectedStages: ["IXSCAN"]});
assert.sameMembers(coll.find({b: 2}).toArray(), [{_id: 1, a: 2, b: 2}, {_id: 2, b: 2, c: 2}]);
assertStagesForExplainOfCommand(
{coll: coll, cmdObj: {find: coll.getName(), filter: {c: 1, a: 1}}, expectedStages: ["IXSCAN"]});
assert.sameMembers(coll.find({c: 1, a: 1}).toArray(),
[{_id: 0, a: 1, b: 1, c: 1}, {_id: 4, a: 1, b: 4, c: 1}]);
jsTestLog("Cannot create a new compound hashed index after downgrading FCV to 4.2.");
let coll_other = testDB.coll;